worldwide, which is caused by bovine leukemia virus (BLV). The prevalence of infection in
Canadian dairy herds is high and continues to increase; however, there has not been a
national program to control BLV. This cross-sectional study was conducted to identify
potentially important risk factors for BLV infection on Canadian dairy herds, which is a
prerequisite to developing an effective control program. During 1998–2003, based on a …